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Oksi-84 [34.3K]
3 years ago
5

Consider the following neutral electron configurations in which 'n' has a constant value. Which configuration would belong to th

e element with the most negative electron affinity, E-ea?a) ns^2b) ns^2 np^2c) ns^2 np^5d) ns^2 np^6
Physics
1 answer:
Monica [59]3 years ago
5 0

Answer:

C. ns² np^5

Explanation:

An electron gets more electro-negative as it increases in number of electrons until it shell gets filled up. At the point when its shell is filled up, the electron becomes neutral; i.e. not positive and not negative.

Only ns² np^5 satisfies this condition; reason being that it has higher electrons

Be(g) + e + 241 kJ ==> Be^-(g) EA = +231 kJ/mol. (endothermic)

Considering the example above

Also, electron affinity is referred to as the amount of energy absorbed when there's an additional electron to an isolated gaseous atom which forms an ion with a 1- charge by assigning a positive value when energy is absorbed and a negative value when energy is released

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Answer:

c. a and c

Explanation:

ammeters are connected in series to measure charge/current

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2 years ago
g Determine the magnetic field midway between two long straight wires 2.0 cm apart in terms of the current I in one when the oth
MrMuchimi

Answer:

B_{net} =(2\times 10^{-5}T/A).(I-25A)

Explanation:

Given :

the distance between the two wires is  = 2 cm

                                                                  = 0.02 m

Current in one of the wire, I = 25 A

Now we know that, when the direction of the current is same that is in one direction , the magnetic field at the mid point in between the two wires will oppose each other.

Therefore we know that

B_{net} = \frac{\mu _{o}\times I_{1}}{2\pi r_{1}}-\frac{\mu _{o}\times I_{2}}{2\pi r_{2}}

                            =\frac{(4\pi \times 10^{-7}T.m/A)}{2\pi (1\times 10^{-2}m)}\times (I-25A)

                            = (2\times 10^{-5}T/A).(I-25A)

4 0
3 years ago
Explain how muscles and bones work together to help bend the arm.
fomenos

Answer:

Bones make sure the arms structure is stable while the muscle is the one actively moving it and carrying out actions.

5 0
3 years ago
A belt of negligible mass passes between cylinders A and B and is pulled to the right with a force P. Cylinders A and B weigh, r
V125BC [204]

Answer:

(a) whether slipping occurs between the belt and the cylinder i think is the answer dont hate if you get it wrong please and thank you.

Explanation:

i am just guessing otay.

7 0
3 years ago
What is the voltage across an 8.00 nm–thick membrane if the electric field strength across it is 5.50 MV/m?
polet [3.4K]

Answer:

0.044 V

Explanation:

E = Electric field = 5.5\times 10^6\ V/m

d = Thickness of membrane = 8 nm

When the electric field strength is multiplied by the membrane thickness we get the voltage

Voltage across a gap is given by

V=Ed\\\Rightarrow V=5.5\times 10^6\times 8\times 10^{-9}\\\Rightarrow V=0.044\ V

The voltage across the membrane is 0.044 V

4 0
3 years ago
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